Window-cleaner&#39;s safety device



Nov. ,22, 1927. 1,650,371

c. MALLON WINDOW CLEANERS SAFETY DEVICE Filed June 19. 1926 Fete-ratedNov. 22, 1927.

ensures MALLON, on NEW YORK, N. Y.

WINDOW-CLEANERS SAFETY DEVICE.

Application filed June 19, 1926. Serial No.i 117,038.'

This invention relates to a window cleaners safety device, and morespecifically to the supporting device or anchor which is connected tothe building structure and to which the window cleaners safety belt isadapted to be connected and disconnected.

fin object of the invention is to provide a support-or anchor devicewhich is of simple construction and which may be attached or mounted inits operative position with a minimum ofefii'ort and time consumption.

A further object is to so construct the device'or anchor that it willtake an unusually firm gripupon the abutting part of the buildingstructure, nection between the anchor and the building structurecorrespondingly substantial and efficient; r

A further object is to so construct the device that it will fulfill theabove objects without necessity for the cutting away of any of the partsof the building structure, except a single straight bore, during theoperation of attaching it to the building 7 structure.

More specifically, it is an object of this invention to provide ananchor so formed and constructed as to include biting edges for engagingagainst the surface of the window frame and the biting edges beingadapted to bite into said surface for assisting in the support of thehead when the bolt is drawn tight.

Other objects and aimsof the invention, more or less specific than thosereferred to above, will be in partfobvious and in part pointed out inthe course of the following description of the elements, combinations,arrangements of parts and applications of principles constituting theinvention; and thescope of protectioncontemplated will be indicated inthe appended claims.

In the accompanying drawings which are to be taken as a part of thisspecification, and in which I have shown merely a preferred form ofembodiment of the inven-' Fig. 1 is a side view of an anchor boltconstructed in accordance withthis invention and showing the same as itappears in use connected with a window frame, the window frame beingshown in horizontal section, and I Fig. 2is a detailperspective view ofthe head end of Referring to the drawings for describing thus renderingthe 0011- 'a position as to be more number of the anchor device seen inFig- 1.

in detail the structure shown therein. the reference character Lindicates one of the side members of a windowlframe, a portion of awindow, as 1, being shown in association therewith. Through the windowframe L is formed a single bore Qadapted to receive the shank of the.safety bolt or anchor Gr. Abutting the outer surface of the windowframe L is shown a portion of the masonry or other part of the buildingstructure as 3, 'the angle betwen-the outer I surface of thewindow frameand the masonry 3 being furnished with the usual staff bead'I-I. i

The bore 2 continues through the staff bead H. i 1

At the outer end of the bolt G is a head 4 for engaging against theouter surface of the staif bead, and "at the inner end of the bolt is anut 5 which is threaded upon the boltand which is adapted to draw the Ihead i firmlyagainst the bead H when the nut is tightened. i Y

The head l is preferably disposed at an acute angle relative to thelength of thebolt and is formed with an outwardly projecting lug thereonadapted to be engagedby a part of the window cleaners safety belt andhav ing an auxiliary head 7 to prevent accidental detachment of saidbelt, as is usual in this art.

The angular disposition of the head i is for the purpose of disposingthe lug 6 in such the-belt fixture.

It has been found in practice that due to the great variation incontours of the outer surfaces of the staff beads at the side of thewindowsin different buildings it has been practically prohibitive toprovide safety bolt headstof all of the different contours met with, andhence it has become the universal practice to make the safety bolts withheads at right angles to the length of the bolt and to cut awaysuit-able portions of the staff bead to allow these heads to be receivedinto the head for a suitable distanceto enable them to find asatisfactory flat support. This practice has not only resulted inconsiderable unnecessary expense of time and money in the operation ofattaching a large bolts but has resulted in a positive danger in thatthe workman'in cutting away the material of the head, in doing the workby hand, has not always succeeded in providing a suitable flat surfaceto-"be enreadily engaged by I gaged by the bolt head. If the surfaceunderlying the head engages the head only at one end there is a strongbending strain set up at the juncture of the shank and head when the nutis drawn tight, said strain being detrimental to the fullest measure ofefficiency of the device.

By the present invention a headis provided which is at an angle to thelength of the bolt and which is curved so as to be of pronounced channelshape, as at 8, on its under-surface for engaging against the surface ofthe staff bead. By channelling or curving the undersurface of the headsui stantially as illustrated said surface is made to approximatelyconform in general contour to most of the staff beads now used and t thesame time provides opposite biting edges as 99 which readily embedthemselves or bite into the material of the beads, as shown at lO-and 11in Fig. 1, when the head is drawn up tight. This is particularly truewhere the curvature of the surface of the head is of greater radius thanthe curvature of the channel surface 8. At the same time the portion ofthe head which [lies in the region between the biting edges is crowdedand urged inwardly toward the depth of the channel, and this crowding ofthe material of the bead, which is usually wood, of course causes thematerial to be somewhat condensed and thus made more firm and strong. Asthe material is crowded inwardly it is urged into tighter contact withthe shank portion of the device at a point directly adjacent the head sothat a highly etlicient support is thus given the head without necessityfor any preliminary cutting away of material of .the bead to fit thehead.

By the means as illustrated the. head is given a uniformly efiicientgrip upon the staff head. All strains are distributed evenly throughoutthe head and the head is accordingly given a high degree of efficiencyfor the performance of its vital function, namely as a life savingdevice.

By disposing all parts of the head structure at an angle relative to thelength of the bolt, so that the head may be more readily accessible tothe belt device, the lug portion 6 may be maintained at 1ninimum length,and thus be kept amply strong without wasteful use of material.

The concavity of the under-surface of the head, and the engagement ofthe material of the bead therein operates at all times to prevent anypossible rotary movement of the bolt within the bore of the window frameand the grip of the biting edges 9 into the material of the window frameis also effective in obtaining this highly desirable result.

While there is shown, and described hereinabove, a head having only asingle lug 6,

with auxiliary head 7 thereon, it will of course be understood that thenumber of lugs provided upon the head is merely a matter of choice, asis also the shape or form of the lug or lugs.

As many changes could be made in this construction without departingfrom the scope of the invention as defined in the following claims, itis intended that all matter contained in the above description or shownin the accompanying drawings, shall be interpreted as illustrative onlyand not in a limiting sense.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. A device of the class describedcomprising a shank portion and a head portioma clamp nut threaded uponthe shank portion by which to draw the head-portioninto operativeposition, the head portion having a projecting therefrom to receive thewindow cleaners usual belt device, and the under-surface of the headbeing of channel shape providing oppositely disposed edges thereonadapted to bite into the material of the window frame under the pull ofthe clamp nut.

2. A device of the class described comprising a shank portion and a headportion, a clamp nut threaded upon the shank portion by which to drawthe head portion into operative position, the head portion beingdisposed at an angle relative to the length of the shank portion andhaving a lug pro jecting therefrom to receive the window cleaners usualbelt device, and the undersurface of the head being of channel shapeproviding oppositely disposed edges thereon adapted to bite into thematerial of the window frame under the pull of the clamp nut.

3. A. device of the class described comprising a shank portion and ahead portion, a clamp nutthreaded upon the shank portion by which todraw the head portion into operative position, the head portion beingdisposed at an angle relative to the length of the shank portion andhaving a lug projecting therefrom to receive the window cleaners usualbelt device, and the under-surface of the head being shaped to provide apair of marginal edges spaced apart in parallel relation thereon adaptedto bite into the material of the window frame under the pull of theclamp nut.

at. A device of the class described comprising a shank portion and ahead portion, clamp means provided upon the shank portion by which todraw the head portion into engagement with part of a window'frame, thehead portion having a lug projecting therefrom to receive the windowcleaners usual belt device, said lug projecting angula-rly in onedirection with respect to the length of the shank portion, the remainderthe shank portion and said lug, and the un-' der-surface of the headhaving longitudinally extending portions thereon spaced apart adapted tobite into the material of the window frame under the pull of the clampmeans said under-surface being shaped to dispose one of saidlongitudinally extending portions relatively nearer to the clamp meansthan the other and to provide a curved surface between saidlongitudinally extending portions to conform to theunderlying surface ofthe window frame.

5. In a device of the class described, comprising a head having a singlebolt-like shank portion extending from the undersurface thereof andhaving clamp means connected with said boltby Which to draw theunder-surface of the head against a surface portion of a window framewhen said shank is in position extending through an opening in theWindow frame and a lug projecting from said head in a direction at anangle to the length of the shank, the combination therewith of means forretaining the head against rotary movement with respect to the windowframe, said means consisting in that said head is elongated in adirection transverse to the length of both said shank and said lug andalso in that the under-surface of said head is curved transversely ofits length to conform to a curvatureof the engaged surface of the windowframe.

In testimony whereof I afiix my signature.

CHARLES MALLON.

